Buy These Clips NOW. You are EXCELLENT! I've used lightweight, inexpensive clips in the studio and on set to secure backgrounds before purchasing them. They broke in the past. I recently hung a backdrop and was concerned the clamp wasn't strong enough. I was right. The next day, the background fell and the collar broke into several pieces on the ground. It's good that this happened when nobody was in the studio. Such a projectile could paralyze a customer or meπ€£You are worth every penny. Well done and open enough for my backend system. I will order 2 more boxes and give one away to a photographer friend.